HELP MEEEEE I HATE WIFI!

Hello there! My wifi is currently buggin the hell out of me.. I have a main wifi server and an add on connection point to boost the range. Each point has a different login. I can login to the add on easy enough but it has the weaker and crappier signal, unlike the main one which is fibre optic super speed. But.. When I try to login to the main server this message from the devil pops up &amp;quot;failed to associate with network&amp;quot;...*promptly throws phone through wall*......so please if anyone can sort this please tell me soooon!